Surprising cause of high blood pressure you didn’t know

When it comes to high blood pressure– hypertension – there are many factors that can cause your numbers to soar. Salt intake, stress, old age, smoking, extra weight, lack of physical activity, genetics, alcohol consumption, sleep apnea, and kidney disease are all common causes of high blood pressure, but a new study has found another one, which may surprise you.

Air pollutants trigger high blood pressure

The new study conducted by researchers at Guangdong Provincial Institute of Public Health in China have found strong ties between air pollutants and high blood pressure. Previous studies have examined the link between air pollution and blood pressure, but the new study aimed to confirm those previous results, which were believed to be controversial.

The study took form of a meta-analysis that looked at 17 previously published studies involving over 108,000 hypertension patients and 220,000 controls. High blood pressure was defined as a systolic reading of over 140 mm Hg and a diastolic reading of over 90 mm Hg.

The study found that high blood pressure was significantly associated with short-term exposure to sulfur dioxide (SO2), which is a product of burning fossil fuels and particulate matter (PM) commonly found in the air – in dust, dirt, and smoke. There was even a greater association between high blood pressure and PM 2.5, which are particles smaller than a speck of dust and are the most hazardous forms of air pollutants.

Further findings revealed high blood pressure was associated with exposure to nitrogen dioxide and PM10, which are larger particulate matter particles.

On the other hand, there were no significant associations found between short-term exposure to ozone and carbon monoxide and high blood pressure, but the researchers suggest these pollutants need further study.

Lead author of the study Tao Liu commented, “In our analysis of 17 previously published studies, we discovered a significant risk of developing high blood pressure due to exposure to air pollution. People should limit their exposure on days with higher air pollution levels, especially for those with high blood pressure, even very short-term exposure can aggravate their conditions.”

Researchers are now working to further their research as a means of influencing air pollution policies.

Tips to avoid pollution

Unfortunately, we cannot avoid pollution entirely as it is all around us, but there are ways you can limit your exposure to ensure you keep your blood pressure numbers in check. Here are some tips to help you minimize your exposure to air pollution.

Check the air quality index (AQI) in your area prior to leaving the house.

If you exercise outdoors, try sticking to a morning routine as there is less pollution present.

When possible, avoid heavy traffic, whether you are stuck in it or working out near the roads. As a general rule, never exercise within 400 meters of heavy traffic.

Set your car fan to recirculating, so you do not pull in air from outside.

Do not smoke indoors and avoid areas that allow smoking.

By following these tips, you can better help reduce your exposure to air pollution.

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On any matter relating to your health or well-being, please check with an appropriate health professional. No statement herein is to be construed as a diagnosis, treatment, preventative, or cure for any disease, disorder or abnormal physical state. The statements herein have not been evaluated by the Foods and Drugs Administration or Health Canada. Dr. Marchione and the doctors on the Bel Marra Health Editorial Team are compensated by Bel Marra Health for their work in creating content, consulting along with formulating and endorsing products.